2123993172 has 24 divisors (see below), whose sum is σ = 5663982016. Its totient is φ = 606855168.

The previous prime is 2123993161. The next prime is 2123993173. The reversal of 2123993172 is 2713993212.

It is a super-2 number, since 2×2123993172² = 9022693989405243168, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2123993172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123993173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12642733 + ... + 12642900.

Almost surely, 2^2123993172 is an apocalyptic number.

It is an amenable number.

2123993172 is an abundant number, since it is smaller than the sum of its proper divisors (3539988844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2123993172 is a wasteful number, since it uses less digits than its factorization.

2123993172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25285647 (or 25285645 counting only the distinct ones).

The product of its digits is 40824, while the sum is 39.

The square root of 2123993172 is about 46086.8004096618. The cubic root of 2123993172 is about 1285.4377171115.

It can be divided in two parts, 21239 and 93172, that added together give a palindrome (114411).

The spelling of 2123993172 in words is "two billion, one hundred twenty-three million, nine hundred ninety-three thousand, one hundred seventy-two".